The first device that I connect will work fine, reporting power consumption correctly.
Connecting a second or third device will seem to increase the power consumption on the first port while not reporting anything on any of those ports.
Furthermore, power output on these ports seems to switch on/off rapidly, creating a pulsating glow in the power led on those devices.
Troubleshooting done so far:
- Disconnected devices, reconnected on other ports. Result: same.
- Disconnected devices, connected devices in a different order. Result: the first port that is connected reports correctly, the subsequent ones doesn't not. (The difference is this time it is another device and another port.)
- Checked power consumption. Result: <7W pr port.
What am I doing wrong?
Best Answer
It turned out to be an issue with gnd and negative being connected in the equipment in question.